VMware vsphere Examples and Scenarios

Transcription

1 VMware vsphere Examples and Scenarios ESXi 5.1 vcenter Server 5.1 vsphere 5.1 This document supports the version of each product listed and supports all subsequent versions until the document is replaced by a new edition. To check for more recent editions of this document, see EN

2 VMware vsphere Examples and Scenarios You can find the most up-to-date technical documentation on the VMware Web site at: The VMware Web site also provides the latest product updates. If you have comments about this documentation, submit your feedback to: Copyright 2011, 2012 VMware, Inc. All rights reserved. This product is protected by U.S. and international copyright and intellectual property laws. VMware products are covered by one or more patents listed at VMware is a registered trademark or trademark of VMware, Inc. in the United States and/or other jurisdictions. All other marks and names mentioned herein may be trademarks of their respective companies. VMware, Inc Hillview Ave. Palo Alto, CA VMware, Inc.

3 Contents 1 About vsphere Examples and Scenarios 5 2 Getting Started with ESXi 7 Network Environment 8 Install ESXi and Deploy Your First Virtual Machine 9 3 Getting Started with vcenter Server and the vsphere Web Client 15 vsphere and vcenter Server 16 Install vcenter Server by Using vcenter Simple Install 18 4 Configuring iscsi Adapters for Hosts to Access vsphere Shared Storage 23 Configure Software iscsi Adapters 24 5 Configuring Hosts to Use vmotion for Increased Service Availability 29 Configure Hosts for vmotion and Migrate Powered-On Virtual Machines 30 6 Setting an Alarm Action for Datastore Usage on a Disk 37 Configure and Act on a Triggered Datastore Usage Alarm 39 7 Creating a Role That Permits Completion of a Limited Task 43 Creating and Configuring a Role That Limits Users to Deploying Virtual Machines from Templates 44 8 Licensing vsphere 49 License ESXi Hosts and vcenter Server and View License Usage 50 Index 55 VMware, Inc. 3

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5 About vsphere Examples and 1 Scenarios The examples and scenarios in this publication identify tasks in vsphere and suggest ways to accomplish them. For instance, for the first-time user who wants to evaluate vcenter Server, vsphere Examples and Scenarios contains Chapter 2, Getting Started with ESXi, on page 7 and Chapter 3, Getting Started with vcenter Server and the vsphere Web Client, on page 15. These sections guide the user through tasks that result in having a virtual machine on an ESXi host, both of which are managed with vcenter Server through the vsphere Web Client. In a different scenario, someone who wants to see how vsphere can be configured to send notifications when alarm thresholds are crossed can review Chapter 6, Setting an Alarm Action for Datastore Usage on a Disk, on page 37. Other scenarios deal with networking, virtual machine deployment, and so on. Scenarios should be performed in the order that they appear in the book. For example, you must install ESXi before you continue to vcenter Server installation and configuration. Flowcharts in the beginning of each scenario illustrate the sequence of steps you must perform in order to accomplish the scenario's objective. There are multiple approaches to accomplish a goal in vsphere, and the flowcharts might visually represent an alternative way to accomplish the same goal. Typically, you will follow the workflow represented by the steps in the vertical sequence. Everyone's environment and policy set is different. VMware recommends that you first experiment with the procedures presented in vsphere Examples and Scenarios on test instances in your datacenter. Each scenario assumes that you have completed the previous one and followed the steps to build an environment with specific configuration details. This document is not for troubleshooting. For problems that you might be experiencing, see vsphere Troubleshooting. VMware, Inc. 5

6 VMware vsphere Examples and Scenarios 6 VMware, Inc.

7 Getting Started with ESXi 2 Get started with ESXi quickly with information about installation and initial setup. The procedures show you how to install and set up a basic inventory for a single-host virtualization environment. In this scenarios, you are a system administrator who will be installing VMware ESXi to deploy virtualization for the first time. Specifically, the scenario targets users who meet the following requirements: Have at least one physical server that meets ESXi requirements Do not yet have the ESXi software installed Do not yet have the vsphere Client or VMware vcenter Server installed After your host is set up, you can install the vsphere Client, deploy virtual machines, and explore a multiplehost virtualization environment with vcenter Server. To perform some of the scenarios in this publication, you must have two running ESXi hosts. The convention used in this book refers to those hosts as ESXi-A and ESX-B. Their respective IP addresses are listed in Network Environment, on page 8. Workflow for installing and managing a single ESXi host You can deploy ESXi by using the interactive installer. After the installation and configuration of ESXi, download and install the vsphere Client to manage a single host without a vcenter Server instance. VMware, Inc. 7

8 VMware vsphere Examples and Scenarios Figure 2-1. Workflow for ESXi Installation Start host installation and configuration Install ESXi Configure ESXi Download and install the vsphere Client Create a virtual machine Run virtual machines on ESXi This chapter includes the following topics: Network Environment, on page 8 Install ESXi and Deploy Your First Virtual Machine, on page 9 Network Environment Set up your network so that you ensure IPv4 traffic between vsphere components. You can use the network configuration information in this topic in later scenarios. All scenarios take place in a /25 private network without a DHCP server present on the network. To ensure Internet connectivity, you must use a network address translator gateway or a proxy server. You must have a running Windows machine with access to the example network. In a production environment, vsphere components can be deployed in a wide variety of IPv4 and IPv6 network configurations. The network details listed below represent only one example. Table 2-1. Network adapters Network adapter IP address ESXi-A ESXi-B vcenter Server virtual machine iscsi storage VMware, Inc.

9 Chapter 2 Getting Started with ESXi Table 2-1. Network adapters (Continued) Network adapter IP address vmotion adapter on host ESXi-A vmotion adapter on host ESXi-A Default gateway Table 2-2. Network Details Network Component IP address Network Broadcast address Mask IP address range Install ESXi and Deploy Your First Virtual Machine You can install ESXi interactively on the local hard disk of the host machine. Use the vsphere Client to manage hosts directly and deploy virtual machines without a vcenter Server instance. ESXi is the virtualization layer of vsphere that runs on physical hardware and abstracts system resources into multiple virtual machines. Prerequisites Verify that your host machine hardware is supported. See the VMware Compatibility Guide at Back up or migrate important data on the host machine. Verify that your network environment meets the example requirements specified in Network Environment, on page 8. Verify that you have ESXi 5.1 installation media. Verify that you have the installation media required to install a supported version of Windows. Verify that you have administrative access to a Windows machine that has access to the scenario network. Verify that you have connected a keyboard and monitor to the host to use the direct console, or that you can use a virtual direct console provided by a remote access card on the host machine. 1 Install ESXi Interactively on page 10 You install the ESXi bare-metal hypervisor as the first step to creating a vsphere environment. In a typical interactive installation, you boot the ESXi installer and respond to the installer prompts to install ESXi to the local host disk. 2 Configure the ESXi Host on page 10 You have installed ESXi on one of your machines, designated ESXi-A. After you finish the interactive installation of ESXi, use the direct console to configure your host. Assign the host a specific IP address and review the configuration options that the direct console provides. 3 Install the vsphere Client on page 11 You have installed and configured ESXi. To deploy virtual machines and perform administrative tasks, you must install the vsphere Client and use it to manage the host. You can download the vsphere Client installer binary from your host. VMware, Inc. 9

10 VMware vsphere Examples and Scenarios 4 Log in to Your ESXi Host and Deploy a Virtual Machine on page 12 You have installed and configured ESXi. You can deploy the first virtual machine on your ESXi host by using the vsphere Client. Install ESXi Interactively You install the ESXi bare-metal hypervisor as the first step to creating a vsphere environment. In a typical interactive installation, you boot the ESXi installer and respond to the installer prompts to install ESXi to the local host disk. Interactive installation is the preferred way to install ESXi in small environments. Interactive installation does not require the use of scripts or an existing VMware Auto Deploy infrastructure. If you have not installed ESXi on the target disk, all data located on the drive is overwritten, including hardware vendor partitions, operating system partitions, and associated data. 1 Load the ESXi installer media in a physical or virtual drive on your host machine and restart the host machine. 2 Set the BIOS to boot from the CD-ROM device. See your hardware vendor documentation for information about changing boot order. 3 Select the ESXi 5.1 installer in the boot menu and press Enter. 4 To accept the EULA, press F11. 5 Select the drive on which to install ESXi and press Enter. If you are installing ESXi on a disk that contains a previous installation of ESXi or ESX, or a VMFS datastore, the installer provides you with options for upgrading. 6 To select the default keyboard layout for the host, press Enter. 7 To set the host password, type my_esx_password and retype the password to confirm it. 8 To begin installation, press F11. 9 After the installation finishes, remove the installation media and press Enter to restart the host. 10 (Optional) Repeat steps Step 1-Step 9 to install ESXi on another machine. Two ESXi hosts are required for some of the scenarios in this publication. You have successfully installed ESXi in evaluation mode. You can use all ESXi features for 60 days. You can later use the vsphere Web Client or the vsphere Client to enter a valid license key. In the absence of a DHCP server, the host has been assigned an IP address in the address block /16. What to do next Log in to the ESXi direct console and configure the host. Configure the ESXi Host You have installed ESXi on one of your machines, designated ESXi-A. After you finish the interactive installation of ESXi, use the direct console to configure your host. Assign the host a specific IP address and review the configuration options that the direct console provides. As part of the Getting Started with ESXi scenario, you must configure your host with a specific IP address. The direct console lets you configure networking on individual hosts without using the vsphere Client. 10 VMware, Inc.

11 Chapter 2 Getting Started with ESXi After the host finishes the autoconfiguration phase, the direct console appears on the host monitor. Key operations available to you in the direct console include configuring hosts, setting up administrative access, and troubleshooting. 1 Start the direct console (DCUI) on the host ESXi-A. 2 Press F2 to access the configuration screen. 3 Type your administrative login credentials. a b In the Login Name text box, type root. In the Password text box, type my_esx_password. You set the administrative password in Install ESXi Interactively, on page Use the keyboard to select Configure Management Network and press Enter. 5 Select IP Configuration and press Enter. 6 Verify that Set static IP address and network configuration is selected, and type the network configuration details. Option Value IP Address Subnet Mask Default Gateway The network details are specific to the scenario. In a production environment, the IP configuration depends on your network settings. 7 Press Enter to accept the IP configuration changes. The management network restarts. 8 (Optional) Repeat the steps for the host ESXi-B and assign to the host the IP address You configured a new IP address for your host. What to do next Download and install the vsphere Client to manage your ESXi host and deploy virtual machines. Install the vsphere Client You have installed and configured ESXi. To deploy virtual machines and perform administrative tasks, you must install the vsphere Client and use it to manage the host. You can download the vsphere Client installer binary from your host. Use the standalone vsphere Client application to manage your host directly before you move on to more complex environments. You can use vcenter Server and the browser-based vsphere Web Client to manage multihost environments. 1 Log in to a Windows system that can access the host network. 2 Open a Web browser window and type the IP address of your host. Type You set the IP address of the host during host configuration. VMware, Inc. 11

12 VMware vsphere Examples and Scenarios 3 Click Download vsphere Client and save the installer to a local directory. 4 Double-click the installer executable. 5 Accept all default settings in the installer, and click Finish. You have installed the vsphere Client on your local Windows machine. What to do next Use the vsphere Client to connect to your host and deploy a virtual machine. Log in to Your ESXi Host and Deploy a Virtual Machine You have installed and configured ESXi. You can deploy the first virtual machine on your ESXi host by using the vsphere Client. In an environment without vcenter Server, you can use the vsphere Client to connect directly to the host and perform administrative tasks. A single host can run multiple virtual machines. ESXi supports a wide range of guest operating systems. To create a Windows virtual machine, you need a Windows installation disk. 1 Start the vsphere Client and type the login details for your host. a In the IP address / Name text box, type b c In the User name text box, type root. In the Password text box, type my_esx_password. 2 Click Install this certificate and do not display any security warnings, and click Ignore. 3 Click New Virtual Machine. 4 Follow the Create New Virtual Machine wizard to create a Windows virtual machine. a b c d e Click Typical, and click Next. Type My_Windows_VM, and click Next. To place the virtual machine files on the existing datastore, click Next. Select a Windows version that corresponds to the installation media that you own. Accept all default settings to finish the wizard. To install vcenter Server in the virtual machine, assign at least 4GB of RAM to the virtual machine. 5 Select the My_Windows_VM virtual machine. 6 Place your Windows installation disk in the optical media drive of your local machine. 7 Click the Connect/disconnect CD/DVD devices of the virtual machine icon, and select the letter drive that corresponds to your DVD device. 8 Click the Launch Virtual Machine Console icon. 9 Select the My_Windows_VM console window, and click the Power on icon. 10 Complete the Windows installation wizard. In a later scenario, you use the windows administrative account as the administrative account for vcenter Server. Assign the password My_windows_password to the administrator user. You have a running Windows virtual machine on your ESXi host. 12 VMware, Inc.

13 Chapter 2 Getting Started with ESXi What to do next You can install vcenter Server in a Microsoft Windows virtual machine that runs on an ESXi host. To use the virtual machine as a host system for your vcenter Server instance with the network conventions of this scenario, assign to the virtual machine the IP address In the next scenario, the administrative account of the Windows virtual machine is set as your vcenter Server account. VMware, Inc. 13

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15 Getting Started with vcenter Server 3 and the vsphere Web Client Get started with vcenter Server and the vsphere Web Client quickly with information about installation and initial setup. You can review how to install and set up a basic inventory for a multiple-host virtualization environment. In this scenario, you are a system administrator who has at least one running ESXi host, and you want to use the advanced management capabilities of vcenter Server. You will use vcenter Simple Install to set up a basic single-node vcenter Server instance. You will install the vsphere Web Client and use its in-browser interface to add ESXi hosts to your vsphere inventory. This scenario is a continuation of the vsphere familiarization that you began in Getting Started with ESXi, where you set up a single-host virtualization environment and deployed a Windows virtual machine. You can manage multiple hosts at the same time with vcenter Server. Using vcenter Server to manage multiple hosts enables you to experiment with advanced management options, such as resource sharing, and all of the other options available within a virtual infrastructure. vcenter Simple Install For small vsphere deployments, vcenter Server 5.1 provides a vcenter Server Simple Install option that installs vcenter Single Sign On, Inventory Service, and vcenter Server on the same Windows system. You start vcenter Simple Install and the application runs the set of vcenter Service installers in the correct order. The vsphere Web Client The vsphere Web Client 5.1 provides you with the full set of capabilities you need to manage both simple and complex vsphere environments. After you install the server component of the vsphere Web Client, you can access the administrative interface in a Web browser. Workflows for Installing vcenter Server You can deploy vcenter Server by using either the Windows installers or the preconfigured Linux-based vcenter Server Virtual Appliance. In this scenario, you install vcenter Server on the Windows operating system. VMware, Inc. 15

16 VMware vsphere Examples and Scenarios Figure 3-1. Workflows for Installation of vcenter Server and the vsphere Web Client Start configuration Use Windows installer? No Deploy vcenter Server virtual appliance Yes Install Single Sign On Configure virtual appliance over the Web Install Inventory Service Install vcenter Server Install vsphere Web Client Use the vsphere Web Client to manage vcenter Server This chapter includes the following topics: vsphere and vcenter Server, on page 16 Install vcenter Server by Using vcenter Simple Install, on page 18 vsphere and vcenter Server VMware vsphere is a suite of virtualization applications that includes ESXi and vcenter Server. vsphere uses virtualization to do the following tasks: Run multiple operating systems on a single physical machine simultaneously. Reclaim idle resources and balance workloads across multiple physical machines. Work around hardware failures and scheduled maintenance. Familiarity with the components that make up a vsphere environment helps you understand the setup process and, ultimately, the process of using VMware vcenter Server to manage hosts and run virtual machines. 16 VMware, Inc.

17 Chapter 3 Getting Started with vcenter Server and the vsphere Web Client vsphere includes the following components in addition to the ESXi host and vsphere Client that you have already set up: The vsphere Web Client VMware vcenter Server Datacenter Host Virtual Machine The vsphere Web Client is the interface to vcenter Server and multi-host environments. It also provides console access to virtual machines. The vsphere Web Client lets you perform all administrative tasks by using an in-browser interface. vcenter Server unifies resources from individual hosts so that those resources can be shared among virtual machines in the entire datacenter. It accomplishes this by managing the assignment of virtual machines to the hosts and the assignment of resources to the virtual machines within a given host based on the policies that the system administrator sets. vcenter Server allows the use of advanced vsphere features such as vsphere Distributed Resource Scheduler (DRS), vsphere High Availability (HA), vsphere vmotion, and vsphere Storage vmotion. A datacenter is a structure under which you add hosts and their associated virtual machines to the inventory. A host is a computer that uses ESXi virtualization software to run virtual machines. Hosts provide CPU and memory resources, access to storage, and network connectivity for virtual machines that reside on them. A virtual machine is a software computer that, like a physical computer, runs an operating system and applications. Multiple virtual machines can run on the same host at the same time. Virtual machines that vcenter Server manages can also run on a cluster of hosts. The following graphic shows the relationships among the basic components of vsphere and how vcenter Server can be used to manage hosts and run virtual machines. Figure 3-2. vsphere Components Virtual machines Hosts vcenter Server Datacenter vsphere Client or vsphere Web Client VMware, Inc. 17

18 VMware vsphere Examples and Scenarios Install vcenter Server by Using vcenter Simple Install vcenter Simple Install provides you with a streamlined way to set up a single-node vcenter Server installation that you can use to manage a small vsphere environment. Run the vcenter Server Install application to install all required vcenter Server components in the correct order. You can use a remote desktop session or the vsphere Client console to install vcenter Server on the Windows virtual machine that you created in the Getting Started with ESXi scenario. This scenario assumes that the IP address of the virtual machine that you created is , in accordance with the conventions defined in Network Environment, on page 8. For the full list of hardware and software requirements for vcenter Server, see vsphere Installation and Setup. Prerequisites Download the vcenter Server installer. Verify that your network environment meets the requirements specified in Network Environment, on page 8. Verify that you have a running ESXi 5.1 host. See Chapter 2, Getting Started with ESXi, on page 7. 1 Install vcenter Single Sign On on page 18 The first step in the vcenter Simple Install process is to install vcenter Single Sign On. Authentication by vcenter Single Sign On makes the VMware cloud infrastructure platform more secure by allowing vsphere software components to communicate with each other through a secure token exchange mechanism. 2 Install vcenter Inventory Service on page 19 You install vcenter Inventory Service as part of a simple installation. You installed vcenter Single Sign On in the previous task. Inventory Service stores vcenter Server application and inventory data, which lets you search and access inventory objects across linked vcenter Server instances. 3 Install vcenter Server on page 19 You install vcenter Server as part of a simple installation. You have already installed vcenter Server Sign On and vcenter Inventory Service in the previous tasks. 4 Install the vsphere Web Client on page 20 You installed vcenter Server. You can install the server component of the vsphere Web Client on the same machine as vcenter Server. The vsphere Web Client runs in your browser and lets you manage your vsphere environment. 5 Add an ESXi Host to the vcenter Server Inventory by Using the vsphere Web Client on page 21 You installed vcenter Server and the vsphere Web Client. You can start managing your vsphere environment in the vsphere Web Client. Install vcenter Single Sign On The first step in the vcenter Simple Install process is to install vcenter Single Sign On. Authentication by vcenter Single Sign On makes the VMware cloud infrastructure platform more secure by allowing vsphere software components to communicate with each other through a secure token exchange mechanism. 1 In the software installer directory, double-click the autorun.exe file to start the installer. 2 Select VMware vcenter Simple Install, and click Install. 18 VMware, Inc.

19 Chapter 3 Getting Started with vcenter Server and the vsphere Web Client 3 Follow the prompts in the installation wizard to choose the installer language and agree to the end user patent and license agreements. 4 Set the password for the vcenter Single Sign On administrator account. The password must be longer than eight characters and include at least one uppercase character and at least one number. a b c In the Password text box, type My_password1. Retype the password to confirm. Click Next. 5 Select Install a local Microsoft SQL Server 2008 R2 Express instance, and click Next. The bundled Microsoft SQL Server 2008 R2 Express database is best suited for small deployments with five or fewer hosts. 6 Verify that the IP address of the local Windows system appears in the Fully Qualified Domain or IP address text box, and click Next. In this scenario, the IP address of the Windows system is Leave the installation directory to the default, and click Next. 8 Leave the HTTS port to the default, and click Next. 9 Click Install and wait for the installation to finish. What to do next The simple installation process runs the individual installers of vcenter Server components in sequence. After the installation of vcenter Single Sign On finishes, continue the vcenter Server setup by installing vcenter Inventory Service. Install vcenter Inventory Service You install vcenter Inventory Service as part of a simple installation. You installed vcenter Single Sign On in the previous task. Inventory Service stores vcenter Server application and inventory data, which lets you search and access inventory objects across linked vcenter Server instances. Prerequisites Verify that the VMware vcenter Simple Install application has started the vcenter Inventory Service installer. u In the VMware vcenter Simple Install window, click Install and wait for the installation to finish. What to do next You have installed the required vcenter components, and can continue with the installation of vcenter Server. Install vcenter Server You install vcenter Server as part of a simple installation. You have already installed vcenter Server Sign On and vcenter Inventory Service in the previous tasks. In vsphere 5.1, you can install vcenter Server only after you have running instances of vcenter Server Sign On and vcenter Inventory Service. Prerequisites Verify that the VMware vcenter Simple Install application has started the vcenter Server installation. VMware, Inc. 19

20 VMware vsphere Examples and Scenarios 1 Leave the License key text box empty to install in evaluation mode, and click Next. You can use all vcenter Server features for 60 days. You can later use the vsphere Web Client to enter a valid license key. 2 Click Install a Microsoft SQL Server 2008 Express instance (for small deployments: up to 5 hosts and 50 virtual machines), and click Next. 3 Leave Use SYSTEM Account selected, and click Next. The administrative account for vcenter Server will have the same user name and password as your Windows administrative account. 4 Leave all port settings to their default values, and click Next. 5 Click Small (less than 100 hosts or 1000 virtual machines), and click Next. 6 Review your settings, click Install. 7 Wait for the installation to finish, and click Finish. What to do next Installation of vcenter Single Sign On, vcenter Inventory Service, and vcenter Server has completed successfully. To manage your new vcenter Server system, install the vsphere Web Client. Install the vsphere Web Client You installed vcenter Server. You can install the server component of the vsphere Web Client on the same machine as vcenter Server. The vsphere Web Client runs in your browser and lets you manage your vsphere environment. In a production environment, you can choose to install the vsphere Web client server component on a separate machine. 1 In the VMware vcenter Installer window, select VMware vsphere Web Client, and click Install. 2 Select the language for the installation, and click OK. 3 Click Next. 4 Accept the end user patent agreement and the end user license agreements. 5 To install the vsphere Web Client in the default directory, click Next. 6 Leave the port settings to their default values, and click Next. 7 In the vcenter Single Sign On administrator password text box, type My_password1. You set the vcenter Single Sign On administrator password in Install vcenter Single Sign On, on page Verify that the installer application has populated the text boxes with correct information about vcenter Single Sign On. a b Verify that the administrator user is admin@system-domain. Verify that the Lookup Service URL is 9 Click Next. 10 Click Install and wait for the installation to complete. 11 Click Finish. 20 VMware, Inc.

21 Chapter 3 Getting Started with vcenter Server and the vsphere Web Client What to do next Manage your vcenter Server in the vsphere Web Client. Add an ESXi Host to the vcenter Server Inventory by Using the vsphere Web Client You installed vcenter Server and the vsphere Web Client. You can start managing your vsphere environment in the vsphere Web Client. You must add ESXi hosts to the vcenter Server inventory, in order to create a vsphere environment and use vsphere features. 1 In the address bar of the Web browser, type 2 Type the login credentials for your vcenter Server system. You configured vcenter Server to use the administrative account of the host Windows machine in an earlier task from the scenario. 3 In the vsphere Web Client navigator to the left, select your vcenter Server system. 4 On the Getting Started tab, click Create Datacenter. You can add hosts to datacenter objects and not directly to vcenter Server objects. 5 Type New Datacenter as a name for the datacenter, and click OK. 6 Right-click the New Datacenter object, and select Add Host. 7 In the Host name or IP text box, type , and click Next. You set the IP addresses and root passwords of your hosts during installation of ESXi. See Chapter 2, Getting Started with ESXi, on page 7. 8 Type the user name and password for the ESXi host, and click Next. a b In the User name text box, type root. In the Password text box, type my_esx_password. 9 Complete the Add Host wizard by accepting the default values. You can monitor the progress of the Add standalone host task in the Recent tasks panel to the right. Your host appears in the inventory. What to do next You can add multiple hosts to your vsphere inventory and perform additional scenarios from this book. Navigate to the vcenter Server settings and change the name of your system to My vcenter Server 5.1. VMware, Inc. 21

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23 Configuring iscsi Adapters for Hosts 4 to Access vsphere Shared Storage ESXi supports iscsi technology that enables a host to use an IP network to access remote storage. With shared networked storage in vsphere you can aggregate storage resources to be more flexible when provisioning the resources to virtual machines. In this scenario, you are the system administrator of a small vsphere environment. You have an iscsi storage device in your network and want to use it with your ESXi hosts. You can use software iscsi adapter included in ESXi to establish a connection to iscsi storage and make it available for use in your environment. The iscsi device has raw partitions, which you can format and add as datastores to your inventory. iscsi shared storage might be an enterprise-level hardware system or a software solution using commodity hardware. Without access to shared storage, the virtual machines on a host are limited to the host's physical hard disk to contain the virtual machines' virtual disks. If you have centralized and aggregated storage resources, it releases virtual machines from depending on local storage. Multiple hosts can access datastores on networked storage concurrently. VMware, Inc. 23

24 VMware vsphere Examples and Scenarios Figure 4-1. Workflows for Adding iscsi Storage Start configuration Use software iscsi adapter? No Activate hardware iscsi adapter Yes Activate software iscsi adapter Determine association between iscsi and network adapters Create VMkernel adapter for iscsi Bind iscsi adapters with VMkernel adapters Add new datastore Use iscsi shared storage For information about the storage options in vsphere, see the vsphere Storage documentation. Configure Software iscsi Adapters With the software-based iscsi implementation, you can use standard NICs to connect your host to a remote iscsi target on the IP network. The software iscsi adapter that is built into ESXi allows this connection by communicating with the physical NICs through the network stack. Prerequisites Verify that you have a iscsi device that is running on the same network as your hosts. Use iscsi only on 100Mbps or faster adapters. 24 VMware, Inc.

25 Chapter 4 Configuring iscsi Adapters for Hosts to Access vsphere Shared Storage 1 Activate the Software iscsi Adapter on page 25 You must activate your software iscsi adapter so that your host can use it to access iscsi storage. A software iscsi adapters is VMware code that is built into the VMkernel. With the software iscsi adapter, you can use iscsi technology without specialized hardware. 2 Create a VMkernel Adapter for iscsi on page 25 You create a VMkernel adapter to access the iscsi array. You enabled the iscsi software adapter in the previous task. You must connect the VMkernel, which runs services for iscsi storage, to a physical network adapter. 3 Bind the iscsi Adapter with the VMkernel Adapter on page 26 You will bind the iscsi software adapter with the VMkernel adapter that you created. Your host can connect to the iscsi storage device over an IP network by using standard network adapters. 4 Add a Datastore to Verify That You Can Use the iscsi Device on page 27 You have activated the iscsi software adapter, configured networking, and bound the storage adapter to the VMkernel network adapter. The iscsi device is now accessible from the host ESXi-A and you can create a new datastore on the iscsi device. Activate the Software iscsi Adapter You must activate your software iscsi adapter so that your host can use it to access iscsi storage. A software iscsi adapters is VMware code that is built into the VMkernel. With the software iscsi adapter, you can use iscsi technology without specialized hardware. You can activate only one software iscsi adapter. 1 Log in to the vsphere Web Client. 2 Select the ESXi-A host in the inventory. 3 Click the Manage tab, and click Storage. 4 Click Storage Adapters, and click the Add new storage adapter icon. 5 Select Software iscsi Adapter and confirm that you want to add the adapter. 6 In the Adapter Details panel, click Enable. The software iscsi adapter appears on the list of storage adapters. After enabling the adapter, the host assigns a default iscsi name to it, such as vmhba#. What to do next Create a VMkernel adapter and a standard switch to associate with the iscsi software adapter. The iscsi adapter handles iscsi processing while communicating with the network adapter. Create a VMkernel Adapter for iscsi You create a VMkernel adapter to access the iscsi array. You enabled the iscsi software adapter in the previous task. You must connect the VMkernel, which runs services for iscsi storage, to a physical network adapter. 1 Select the host ESXi-A in the inventory. 2 Click the Manage tab. 3 Click Networking and click Virtual adapters. VMware, Inc. 25

26 VMware vsphere Examples and Scenarios 4 Click the Add host networking icon. 5 Click VMkernel Network Adapter, and click Next. 6 Click New standard switch and click Next. 7 Click the Add adapters icon to assign an adapter to the Active Adapters group and click Next. Designate a separate network adapter for iscsi. 8 In the Network label text box, type iscsi Network. A network label is a name that identifies to users the VMkernel adapter that you are creating. 9 Select Use static IPv4 settings, type the port network settings, and click Next. Example network settings are listed in Network Environment, on page 8. In a production environment, the iscsi device might be on a separate subnet. In such a case, ensure that the IP settings for the VMkernel adapter are specific to that subnet, but leave the gateway value to its default setting. 10 Review your settings and click Finish. What to do next Bind the VMkernel adapter to the iscsi adapter to enable transfer of data from the iscsi device over the network. Bind the iscsi Adapter with the VMkernel Adapter You will bind the iscsi software adapter with the VMkernel adapter that you created. Your host can connect to the iscsi storage device over an IP network by using standard network adapters. 1 Select the host ESX-A in the inventory. 2 Click the Manage tab, and click Storage. 3 Select the iscsi software adapter. 4 Click the Network Port Binding tab, and click Add. 5 Select the adapter named iscsi Network and click OK. 6 Click Targets. 7 Click Dynamic Discovery, and click Add. Each time the initiator contacts a specified iscsi server, the server responds by supplying a list of available targets to the initiator. The names and IP addresses of these targets appear on the Static Discovery tab. If you remove a static target added by dynamic discovery, the target might be returned to the list the next time a rescan occurs, the HBA is reset, or the host is restarted. 8 In the iscsi Server text box, type In the Port text box, type Click the Rescan storage adapter icon. 11 Click the Devices tab to verify that the iscsi device is visible. What to do next The iscsi storage device is visible from your ESXi host and ready to use. Verify that you can store virtual machine files on the iscsi device. 26 VMware, Inc.

27 Chapter 4 Configuring iscsi Adapters for Hosts to Access vsphere Shared Storage Add a Datastore to Verify That You Can Use the iscsi Device You have activated the iscsi software adapter, configured networking, and bound the storage adapter to the VMkernel network adapter. The iscsi device is now accessible from the host ESXi-A and you can create a new datastore on the iscsi device. 1 Navigate to the My Datacenter object in the inventory. You created a new datacenter with the default name in Add an ESXi Host to the vcenter Server Inventory by Using the vsphere Web Client, on page On the Getting Started tab, click Add a datastore. 3 Type iscsi Datastore and click Next. 4 Click VMFS and click Next. VMFS datastores can store virtual machine files. 5 Select your host and the iscsi device to use for your datastore, and click Next. 6 Click VMFS 5 and click Next. 7 Select Use all available partitions and click Next. This option dedicates the entire disk to a single VMFS datastore. All file systems and data currently stored on this device are destroyed. 8 In the Ready to Complete page, review the datastore configuration information and click Finish. What to do next You created a new datastore. In a production environment, you can use the vsphere Web Client to enable Jumbo Frames for each vsphere standard switch and VMkernel adapter designated for iscsi traffic. See vsphere Storage. VMware, Inc. 27

28 VMware vsphere Examples and Scenarios 28 VMware, Inc.

29 Configuring Hosts to Use vmotion for 5 Increased Service Availability In this example, you are the system administrator in a company that requires virtual machines to run with minimal downtime. With vsphere vmotion, you can move the entire state of a running virtual machine between hosts over a dedicated vmotion network, without service interruption. After you configure ESXi, vcenter Server, and iscsi shared storage according to the previous scenarios in this publication, you can configure your environment for vmotion. The entire state of the virtual machine, as well as its configuration file, if necessary, is moved to the new host, while the associated virtual disk remains in the same location on storage that is shared between the two hosts. After the virtual machine state is migrated to the alternate host, the virtual machine runs on the new host. The state information includes the current memory content and all the information that defines and identifies the virtual machine. The memory content includes transaction data and whatever bits of the operating system and applications are in the memory. The defining and identification information stored in the state includes all the data that maps to the virtual machine hardware elements, such as BIOS, devices, CPU, MAC addresses for the Ethernet cards, chip set states, registers, and so forth. In vsphere 5.1, you can migrate running machines without shared storage. This scenario assumes that you are using shared storage. For more information about migrating virtual machines, see vsphere Virtual Machine Administration. VMware, Inc. 29

30 VMware vsphere Examples and Scenarios Figure 5-1. vmotion Workflow with Standard and Distributed Switches Start vmotion configuration Use distributed switch? Yes Create and configure a distributed switch No Create and configure a standard switch on the source host Configure networking on source host Create and configure a standard switch on the destination host Configure networking on destination host Configure VM for vmotion Migrate running VM Configure Hosts for vmotion and Migrate Powered-On Virtual Machines This scenario demonstrates how to configure vcenter Server and ESX/ESXi hosts so that you can migrate powered-on virtual machines without downtime. vmotion is a prerequisite for advanced vsphere features such as vsphere Distributed Resource Scheduler (DRS) and vsphere High Availability (HA). Prerequisites Verify that you have at least two ESXi hosts that are licensed for vmotion or are in evaluation mode. Verify that you have running instances of vcenter Server and the vsphere Web Client. Verify that hosts have access to shared storage of a supported type, such as Fibre Channel, iscsi, or NAS. Verify that the source and destination hosts have compatible CPUs. Verify that hosts have access to the same physical networks. Verify that you have at least one active Gigabit Ethernet adapter on each host. Virtual machine files must be on shared storage visible by the hosts. Virtual machines must run a supported operating system. 30 VMware, Inc.

31 Chapter 5 Configuring Hosts to Use vmotion for Increased Service Availability Virtual machines must not have a connection to a virtual media device with a mounted local image. Virtual machines must not have a connection to an internal vswitch that is not connected to a physical network. Virtual machines must have access to the same subnets. Virtual machines must not have CPU affinity configured. 1 Create a Datacenter and a Cluster on page 31 To begin with the vmotion example scenario, prepare an EVC-enabled virtual environment for the hosts that you are configuring for vmotion. vsphere environments are typically organized into datacenters and clusters. Using vsphere EVC clusters reduces the risk of incompatible host CPUs that might prevent vmotion migrations. 2 Add Hosts to the EVC-Enabled Cluster on page 32 Add the hosts ESXi-A and ESXi-B to your vsphere inventory. Place them in the cluster My EVC Cluster to ensure CPU compatibility between hosts. 3 Configure vmotion Networking on the Source and Destination Hosts on page 33 vmotion migrations use a dedicated network to transfer the virtual machine state between the source and destination hosts. You must configure such a network for each host that you will use for vmotion migrations. 4 Install VMware Tools on page 34 After you have set up an environment with two hosts and configured vmotion networking, ensure that the virtual machines meet the requirements for vmotion. Install VMware Tools to ensure better virtual machine performance. 5 Migrate Powered-On Virtual Machines by Using vmotion on page 34 After you configure your vsphere environment for vmotion, you can use the vsphere Web Client to migrate powered-on virtual machines between the hosts ESXi-A and ESXi-B. In a production environment, vmotion guarantees minimal downtime of critical tasks that run in virtual machines. Create a Datacenter and a Cluster To begin with the vmotion example scenario, prepare an EVC-enabled virtual environment for the hosts that you are configuring for vmotion. vsphere environments are typically organized into datacenters and clusters. Using vsphere EVC clusters reduces the risk of incompatible host CPUs that might prevent vmotion migrations. This scenario instructs you to use a cluster for your vmotion environment. You can configure vmotion on hosts that are not in a cluster. Add your hosts to a cluster in order to use cluster-specific features such as vsphere EVC, vsphere DRS, vsphere HA, and vsphere distributed switches. 1 Connect to the vcenter Server system My vcenter Server 5.1 by using the vsphere Web Client. 2 Right-click the vcenter Server object and select New Datacenter. 3 Type My vmotion Datacenter and click OK. 4 Navigate to the My vmotion Datacenter object. 5 Right-click the datacenter, and select New Cluster. 6 Type My EVC Cluster in the Name text box. 7 Keep the Turn ON option deselected for both DRS and vsphere HA. VMware, Inc. 31

32 VMware vsphere Examples and Scenarios 8 Enable EVC for the cluster to maximize vmotion compatibility. EVC presents only the CPU instruction set of the least capable processor to guest operating systems. You cannot enable EVC on clusters that contain both hosts with AMD processors and hosts with Intel processors. You can create a cluster without a special license, but you must have a license to enable a cluster for vsphere DRS or vsphere HA. 9 Click OK. What to do next Add the hosts ESXi-A and ESXi-B to the cluster My EVC Cluster. EVC Requirements for Hosts To improve CPU compatibility between hosts that have varying CPU feature sets, you can hide some host CPU features from the virtual machine by placing the host in an Enhanced vmotion Compatibility (EVC) cluster. Hosts in an EVC cluster and hosts that you add to an existing EVC cluster must meet EVC requirements. Power off all virtual machines in the cluster that are running on hosts with a feature set greater than the EVC mode that you intend to enable, or migrate out of the cluster. All hosts in the cluster must meeting the following requirements. Requirements Supported ESX/ESXi version vcenter Server CPUs Advanced CPU features enabled Supported CPUs for the EVC mode that you want to enable Description ESX/ESXi 3.5 Update 2 or later. The host must be connected to a vcenter Server system. A single vendor, either AMD or Intel. Enable these CPU features in the BIOS if they are available: Hardware virtualization support (AMD-V or Intel VT) MD No execute(nx) Intel execute Disable (XD) NOTE Hardware vendors sometimes disable particular CPU features in the BIOS by default. This can cause problems in enabling EVC, because the EVC compatibility checks detect the absence of features that are expected to be present for a particular CPU. If you cannot enable EVC on a system with a compatible processor, ensure that all features are enabled in the BIOS. To check EVC support for a specific processor or server model, see the VMware Compatibility Guide at Add Hosts to the EVC-Enabled Cluster Add the hosts ESXi-A and ESXi-B to your vsphere inventory. Place them in the cluster My EVC Cluster to ensure CPU compatibility between hosts. 1 Select My EVC Cluster in the navigator. 2 Right-click the cluster and select Add Host. This scenario demonstrates how to add the hosts to your vsphere inventory. If the hosts are already managed by your vcenter Server system, you can move them to the EVC-enabled cluster that you created. See the procedure for adding managed hosts to a cluster in vsphere Resource Management. 32 VMware, Inc.

33 Chapter 5 Configuring Hosts to Use vmotion for Increased Service Availability 3 Type the host name or IP address of the host ESXi-A, and click Next. The example scenarios in the beginning of this publication demonstrate how to configure your ESXi hosts with specific IP address, user name, and password. 4 Type the user name and password for the host, and click Next. 5 View the summary information and click Next. 6 Assign a license, and click Next. For the example scenario, you can use Evaluation Mode, which lets you use all vsphere features for a limited period of time. 7 Keep Enable lockdown modedeselected, and click Next. 8 Click Finish. 9 Repeat the procedure for the host ESXi-B. You have added your two hosts to the cluster My EVC Cluster. What to do next vmotion requires a dedicated network over which to migrate the virtual machine data. Configure networking on your ESXi hosts. Configure vmotion Networking on the Source and Destination Hosts vmotion migrations use a dedicated network to transfer the virtual machine state between the source and destination hosts. You must configure such a network for each host that you will use for vmotion migrations. You must perform the network configuration steps on both the source and the destination host. The source host is running the virtual machine that you will migrate to the destination host by using vmotion. 1 Select the host ESXi-A in the inventory. 2 Click the Manage tab. 3 Click Networking and click Virtual adapters. 4 Click the Add host networking icon. 5 Click VMkernel Network Adapter, and click Next. The VMkernel TCP/IP stack handles traffic for several ESXi services, including vmotion. 6 Click New standard switch, and click Next. This scenario instructs you to use vsphere standard switches for vmotion networking. In a production environment, you can choose to configure vmotion networking by using a vsphere distributed switch. See vsphere Networking. 7 Click the Add adapters icon (+) to assign an adapter to the Active Adapters group and click Next. 8 In the Network label text box, type vmotion Network. 9 Click vmotion traffic to enable this port group to advertise itself to another host as the network connection through which vmotion traffic should be sent, and click Next. Leave the rest of the port settings to their default values. 10 Select Use static IPv4 settings, type the port network settings, and click Next. Example network settings are listed in Network Environment, on page 8. VMware, Inc. 33